Built-in electric field-driven NiSe2-NiMoO4 heterostructure for synergistic confinement-conversion regulation of polysulfides
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F25%3A43933843" target="_blank" >RIV/60461373:22310/25:43933843 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S2211285525007761" target="_blank" >https://www.sciencedirect.com/science/article/pii/S2211285525007761</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.nanoen.2025.111417" target="_blank" >10.1016/j.nanoen.2025.111417</a>
Alternative languages
Result language
angličtina
Original language name
Built-in electric field-driven NiSe2-NiMoO4 heterostructure for synergistic confinement-conversion regulation of polysulfides
Original language description
Lithium-sulfur batteries (LSBs) have become a research hotspot for next-generation energy storage systems due to their high theoretical energy density and low cost, however, the shuttle effect and slow reaction kinetics of polysulfides (LiPSs) severely limit their practical applications. In this study, a strategy is proposed to synergistically suppress the shuttle effect while promoting the conversion of LiPSs by constructing flower-like NiSe2-NiMoO4 heterostructure-modified separators. NiMoO4 effectively anchors LiPSs by virtue of its strong adsorption capacity, while the difference in the work function of NiSe2 and NiMoO4 induces the formation of a built-in electric field, which significantly accelerates the kinetics of interfacial charge transfer and transformation of LiPSs. Combined experimental and theoretical calculations demonstrate that the heterostructure not only provides dual physical-chemical confinement for LiPSs, but also optimizes the Li2S deposition/dissociation process through electric-field modulation. The cell with NiSe2-NiMoO4 separator exhibits an ultralow capacity decay rate of merely 0.064 % per cycle over 500 cycles at 0.5 C. Furthermore, it demonstrates exceptional temperature adaptability, retaining 90.2 % and 70.9 % of its initial capacity after 150 cycles under low-temperature (0 degrees C) and high-temperature (60 degrees C) conditions, respectively. Notably, the cell with NiSe2-NiMoO4 separator delivers a high areal capacity of 5.6 mAh cm-2 even under a high sulfur loading of 6.4 mg cm-2, demonstrating excellent electrochemical performance under practical electrode conditions. This work proposes a novel design strategy for high-performance LSBs interfaces by leveraging built-in electric fields in heterojunction architectures.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10400 - Chemical sciences
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Nano Energy
ISSN
2211-2855
e-ISSN
2211-3282
Volume of the periodical
144
Issue of the periodical within the volume
November 2025
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
11
Pages from-to
111417
UT code for WoS article
001562827800001
EID of the result in the Scopus database
2-s2.0-105014529866